Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1986-12-12
1988-06-28
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
335213, 242 4B, 242 4C, H01F 700
Patent
active
047542489
ABSTRACT:
A deflection yoke for deflecting an electron beam generated in a cathode-ray tube includes a frusto-conical ferrite core. A pair of windings, each comprising a plurality of turns toroidally wound on the core, produce a magnetic field for deflecting the electron beam when current is passed through the windings. The ferrite core includes a plurality of notches formed in its edge which receive respective ones of the windings to accurately fix the location of the windings with respect to the core. Providing notches directly in the core avoids the need for additional external members for positioning the windings, and improves performance by reducing ringing.
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